Chapter 2

Internet of Things in Precision Agriculture

IoT-Based Architecture for Precision Agriculture

An IoT architecture for agriculture typically involves four layers: perception, network, cloud, and application. These layers enable efficient data collection, secure transmission, reliable storage, and actionable insights for farmers.

Perception Layer

The perception layer, also known as the physical layer, is a crucial component in the IoT framework. It operates as a robust interface, enabling appropriate interaction between the physical and digital domains. This layer is essential for immediately collecting diverse data from sensors and devices. It encompasses critical environmental parameters such as weather conditions, wind flow, humidity, etc. The example of this layer includes a simple sensor with its driver (both hardware and software).

Network Layer

The network layer, recognized as the network and transport layer, facilitates uninterrupted communication and data transfer across diverse devices, constituting the fundamental framework of IoT architectures. As the key element of the entire system, this layer delivers data transmission from the perception layer to the application layers. The data transmission channels, encompassing wired or wireless, short or long-distance mechanisms, serve as foundational components.

Cloud Layer

At the same level of importance as edge and fog, cloud computing is a vital enabler for the growth of IoT agriculture applications. It offers on-demand computing resources and services (e.g., storage, networking, and processing) in a scalable way. The cloud layer handles the agriculture data received from the sensor layer or the fog layer to process, analyze and store them into the cloud. Cloud computing can process and analyze heavy data, that requires more complex operations (e.g., big data processing and predictive analysis like weather forecasting, fire warning, and soil droughting), which exceeds the fog computing capability.

Edge and Fog Computing Layers

There is a growing need for fast, reliable, and efficient computing systems. With the rise of the Internet of Things (IoT) and the proliferation of smart devices, traditional cloud computing solutions are facing new challenges. Edge computing and fog computing have emerged as potential solutions to these challenges, offering new ways of processing and analyzing data in real-time. Edge computing and fog computing are concepts often used interchangeably but have significant differences. Edge computing is a decentralized computing model that brings data processing closer to the devices and sensors that generate it. Fog computing, on the other hand, is a distributed computing model that extends edge computing capabilities to a larger network of devices and sensors.

Application Layer

The IoT application layer, central to this transformation, drives the functionality and intelligence of IoT applications, particularly in intelligent agriculture. This layer integrates data from diverse sensors and devices in agricultural settings, enabling insightful analysis and informed actions. Advanced technologies within this layer, such as machine learning (ML) algorithms and predictive analytics, drive precision farming, optimizing resource allocation, crop management, and fostering sustainable agricultural practices.

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